Which of the following statement is TRUE regarding INSTEAD OF triggers?

INSTEAD OF triggers fire in place of the triggering action and before constraints are processed

If there are AFTER triggers on the table, they will fire after constraint processing.

If the constraints are violated, the AFTER trigger is not executed

All Above

The INSTEAD OF triggers:
INSTEAD OF triggers can be defined on either tables or views; however, INSTEAD OF triggers are most useful for extending the types of updates a view can support. For example, INSTEAD OF triggers can provide the logic to modify multiple base tables through a view or to modify base tables that contain the following columns:
timestamp data type
Computed columns
Identity columns